Improvement in clook-calendaes



j @uitrit tetes gatat @Him il. K. SEEM, OF CANTGN, PENNSYLVANIA. Letters.Patent No. 73,127, dated January 7, 1868.

IMPROVEMENT IN CLOCK-CALENDARS.

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vBe it known that I, J. K. SEEM, 0` Canton, in theicounty of Bradford,and State of Pennsylvania, have invented a new and useful Improvement inClock-Calendars; and I do hereby declare that the Vfollowing is a full,clear, and exact description thereof, which will enable others skilledin the art to make and use the same, reference being had to theaccompanying drawings, forming part of this specification.

c. This invention relates to a new and improved arrangement for showingthe month, the day ofthe month, and the day of the week, on aclock-face; and it consists in an arrangement of wheels which arerevolved by the movement of the clock, whereby a perpetual calendar isproduced, and which is` read on the face of the clock, as I. willproceed to describe.

Figure 1 represents the back side of' the face ofthe clock, showingwheels which are attached to it, by the 'revolution of which the lettersand figures of the months and days are exhibited through apertures inthe face.

Figure 2 shows tho clock-face with the apertures andrnames oi' themonth, day of the month, and day of the week.

Figure 3 is a cross-section of iig. l, through the line :u

Similar letters of reference indicate like parts.

The names ofthe months are placed or printed on two disk-wheels, whichlie one over -the other. Through the outer disk there is a holecorresponding in size and form with that through the clock-face. Eachwheel contains a portion ot' the name of the mont-li, as neither onecould contain thc'wholc unless greatly enlarged. These disk-wheelsareset by hand at the bottom ot' the face, at a, so that the name of themonth is shown through the clock-face, as represented. The outer disk isheld in place bythe stop at e. rlhese disk-wheels are at A, and are seenin dotted lines in iig. 2. B is a wheel, which is placed on theclock-spndle, and which revolves with the hourehand. e e are twopins inthis wheel, which engage with the cogs or lingers on the day-of-theweekwheel C. There are seven of these cogs, one for each day of the week,and they engage with the eogs of the day-ofthe-month wheel D, and turnit, one cog for every day. The wheel D has the nine digits and the 0upon it. Between this wheel and the clock there is a plate, seen indotted lines, at d, through the drawing, iig. 2, having the figures 1 2,and 3 upon it. The plate d is also provided upon its inner side withfour projections, b', near its centre, as shown in fig. 1, and is turnedone figure every ten days by a projection, a', upon one side of thewheel D, engaging with the projections b upon the plate d. .The wheel Dhas ten cogs upon it, so that any number of figures from 1 to 31 can heshown by the wheel und the plate, as the number 15-is shown in thedrawing. When the wheel D shall have made one revolution, the projectiona will engage with one of the projections'b upon the plate d, and thelatter will bc moved so Aas to present the figure 2 through the openingin the face of the dial. 'lhe figure 2 will Athen be opposite thenaught(0) on the wheel 'D, and the day-,of the month indicated will be 20. Theplate d is held in place by spring,f, seen in g, 1,

g is a spring-which holds the wheel C in place', working upon theserrated edge of a disk, J, which is fast to the wheel. h is anotherspring, Vwhich bears against the wheel D. The wheel C revolves on apivot, which is attached to the clock-face. The pivot of D is attachedto an arm,'which raises its centre from the face', and out of the way ofthe plate al, which-plate is revolved within the rim of the wheel, assecu in the drawing. j are apertures ythrough the 'face of the clock,through which the wheels G and D may be moved by hand when desired. v

By this method ot' construction and arrangement, I :un enabled to addthe calendar, as herein shown and described, to old clocks, by merelyadding a new face, and it is more particularly for this purpose that theimprovement is designed. i

l What I claim as new, and desire to secure by Letters Patent, is-

v The construction and arrangement' of the wheels B C D, and the plate'cl, substantially as described for the purposes set forth.

J. K. SEEM.

Witnesses:

CHARLES A. Knrsn, WILLIAM GLncKNnn',

